Patents by Inventor Karl Platzoder

Karl Platzoder has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Semiconductor component
    Patent number: 4187517
    Abstract: A semiconductor thyristor, having a given forward voltage drop, has its turn-off time or the reverse current behavior adjusted in a defined manner and a reduced blocking current. Essentially, the semiconductor element is divided, at its anode end, into zone elements having a high and a low concentration of recombination centers, whereby, at the anode end, zones not oppositely disposed from the emitter receive a lower average concentratin of recombination centers. The invention is most advantageous when applied to power thyristors.
    Type: Grant
    Filed: January 13, 1978
    Date of Patent: February 5, 1980
    Assignee: Siemens Aktiengesellschaft
    Inventor: Karl Platzoder